--- /dev/null
+#include "si2168_priv.h"
+
+static const struct dvb_frontend_ops si2168_ops;
+
+/* execute firmware command */
+static int si2168_cmd_execute(struct si2168 *s, struct si2168_cmd *cmd)
+{
+ int ret;
+ unsigned long timeout;
+
+ mutex_lock(&s->i2c_mutex);
+
+ if (cmd->wlen) {
+ /* write cmd and args for firmware */
+ ret = i2c_master_send(s->client, cmd->args, cmd->wlen);
+ if (ret < 0) {
+ goto err_mutex_unlock;
+ } else if (ret != cmd->wlen) {
+ ret = -EREMOTEIO;
+ goto err_mutex_unlock;
+ }
+ }
+
+ if (cmd->rlen) {
+ /* wait cmd execution terminate */
+ #define TIMEOUT 50
+ timeout = jiffies + msecs_to_jiffies(TIMEOUT);
+ while (!time_after(jiffies, timeout)) {
+ ret = i2c_master_recv(s->client, cmd->args, cmd->rlen);
+ if (ret < 0) {
+ goto err_mutex_unlock;
+ } else if (ret != cmd->rlen) {
+ ret = -EREMOTEIO;
+ goto err_mutex_unlock;
+ }
+
+ /* firmware ready? */
+ if ((cmd->args[0] >> 7) & 0x01)
+ break;
+ }
+
+ dev_dbg(&s->client->dev, "%s: cmd execution took %d ms\n",
+ __func__,
+ jiffies_to_msecs(jiffies) -
+ (jiffies_to_msecs(timeout) - TIMEOUT));
+
+ if (!(cmd->args[0] >> 7) & 0x01) {
+ ret = -ETIMEDOUT;
+ goto err_mutex_unlock;
+ }
+ }
+
+ ret = 0;
+
+err_mutex_unlock:
+ mutex_unlock(&s->i2c_mutex);
+ if (ret)
+ goto err;
+
+ return 0;
+err:
+ dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static int si2168_read_status(struct dvb_frontend *fe, fe_status_t *status)
+{
+ struct si2168 *s = fe->demodulator_priv;
+ int ret;
+ struct si2168_cmd cmd;
+
+ *status = 0;
+
+ if (!s->active) {
+ ret = -EAGAIN;
+ goto err;
+ }
+
+ cmd.args[0] = 0xa0;
+ cmd.args[1] = 0x01;
+ cmd.wlen = 2;
+ cmd.rlen = 13;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ /*
+ * Possible values seen, in order from strong signal to weak:
+ * 16 0001 0110 full lock
+ * 1e 0001 1110 partial lock
+ * 1a 0001 1010 partial lock
+ * 18 0001 1000 no lock
+ *
+ * [b3:b1] lock bits
+ * [b4] statistics ready? Set in a few secs after lock is gained.
+ */
+
+ switch ((cmd.args[2] >> 0) & 0x0f) {
+ case 0x0a:
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
+ break;
+ case 0x0e:
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI;
+ break;
+ case 0x06:
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
+ FE_HAS_SYNC | FE_HAS_LOCK;
+ break;
+ }
+
+ s->fe_status = *status;
+
+ dev_dbg(&s->client->dev, "%s: status=%02x args=%*ph\n",
+ __func__, *status, cmd.rlen, cmd.args);
+
+ return 0;
+err:
+ dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static int si2168_set_frontend(struct dvb_frontend *fe)
+{
+ struct si2168 *s = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ int ret;
+ struct si2168_cmd cmd;
+ u8 bandwidth;
+
+ dev_dbg(&s->client->dev,
+ "%s: delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u\n",
+ __func__, c->delivery_system, c->modulation,
+ c->frequency, c->bandwidth_hz, c->symbol_rate,
+ c->inversion);
+
+ if (!s->active) {
+ ret = -EAGAIN;
+ goto err;
+ }
+
+ switch (c->bandwidth_hz) {
+ case 5000000:
+ bandwidth = 0x25;
+ break;
+ case 6000000:
+ bandwidth = 0x26;
+ break;
+ case 7000000:
+ bandwidth = 0x27;
+ break;
+ case 8000000:
+ bandwidth = 0x28;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* program tuner */
+ if (fe->ops.tuner_ops.set_params) {
+ ret = fe->ops.tuner_ops.set_params(fe);
+ if (ret)
+ goto err;
+ }
+
+ memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5);
+ cmd.wlen = 5;
+ cmd.rlen = 5;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 3;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x51\x03", 2);
+ cmd.wlen = 2;
+ cmd.rlen = 12;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x12\x08\x04", 3);
+ cmd.wlen = 3;
+ cmd.rlen = 3;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x01\x04\x00\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x03\x10\x17\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x02\x10\x15\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x0b\x10\x88\x13", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
+ cmd.args[4] = bandwidth;
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x04\x10\x15\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x05\x10\xa1\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x0d\x10\xd0\x02", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x01\x10\x00\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x18", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x15", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x04\x03\x00\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x03\x03\x00\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x08\x03\x00\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x07\x03\x01\x02", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x06\x03\x00\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x05\x03\x00\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x40", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x01\x10\x16\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ cmd.args[0] = 0x85;
+ cmd.wlen = 1;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ s->delivery_system = c->delivery_system;
+
+ return 0;
+err:
+ dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static int si2168_init(struct dvb_frontend *fe)
+{
+ struct si2168 *s = fe->demodulator_priv;
+ int ret, len, remaining;
+ const struct firmware *fw = NULL;
+ u8 *fw_file = SI2168_FIRMWARE;
+ const unsigned int i2c_wr_max = 8;
+ struct si2168_cmd cmd;
+
+ dev_dbg(&s->client->dev, "%s:\n", __func__);
+
+ cmd.args[0] = 0x13;
+ cmd.wlen = 1;
+ cmd.rlen = 0;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ cmd.args[0] = 0xc0;
+ cmd.args[1] = 0x12;
+ cmd.args[2] = 0x00;
+ cmd.args[3] = 0x0c;
+ cmd.args[4] = 0x00;
+ cmd.args[5] = 0x0d;
+ cmd.args[6] = 0x16;
+ cmd.args[7] = 0x00;
+ cmd.args[8] = 0x00;
+ cmd.args[9] = 0x00;
+ cmd.args[10] = 0x00;
+ cmd.args[11] = 0x00;
+ cmd.args[12] = 0x00;
+ cmd.wlen = 13;
+ cmd.rlen = 0;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ cmd.args[0] = 0xc0;
+ cmd.args[1] = 0x06;
+ cmd.args[2] = 0x01;
+ cmd.args[3] = 0x0f;
+ cmd.args[4] = 0x00;
+ cmd.args[5] = 0x20;
+ cmd.args[6] = 0x20;
+ cmd.args[7] = 0x01;
+ cmd.wlen = 8;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ cmd.args[0] = 0x02;
+ cmd.wlen = 1;
+ cmd.rlen = 13;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ cmd.args[0] = 0x05;
+ cmd.args[1] = 0x00;
+ cmd.args[2] = 0xaa;
+ cmd.args[3] = 0x4d;
+ cmd.args[4] = 0x56;
+ cmd.args[5] = 0x40;
+ cmd.args[6] = 0x00;
+ cmd.args[7] = 0x00;
+ cmd.wlen = 8;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ /* cold state - try to download firmware */
+ dev_info(&s->client->dev, "%s: found a '%s' in cold state\n",
+ KBUILD_MODNAME, si2168_ops.info.name);
+
+ /* request the firmware, this will block and timeout */
+ ret = request_firmware(&fw, fw_file, &s->client->dev);
+ if (ret) {
+ dev_err(&s->client->dev, "%s: firmare file '%s' not found\n",
+ KBUILD_MODNAME, fw_file);
+ goto err;
+ }
+
+ dev_info(&s->client->dev, "%s: downloading firmware from file '%s'\n",
+ KBUILD_MODNAME, fw_file);
+
+ for (remaining = fw->size; remaining > 0; remaining -= i2c_wr_max) {
+ len = remaining;
+ if (len > i2c_wr_max)
+ len = i2c_wr_max;
+
+ memcpy(cmd.args, &fw->data[fw->size - remaining], len);
+ cmd.wlen = len;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret) {
+ dev_err(&s->client->dev,
+ "%s: firmware download failed=%d\n",
+ KBUILD_MODNAME, ret);
+ goto err;
+ }
+ }
+
+ release_firmware(fw);
+ fw = NULL;
+
+ cmd.args[0] = 0x01;
+ cmd.args[1] = 0x01;
+ cmd.wlen = 2;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ dev_info(&s->client->dev, "%s: found a '%s' in warm state\n",
+ KBUILD_MODNAME, si2168_ops.info.name);
+
+ s->active = true;
+
+ return 0;
+err:
+ if (fw)
+ release_firmware(fw);
+
+ dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static int si2168_sleep(struct dvb_frontend *fe)
+{
+ struct si2168 *s = fe->demodulator_priv;
+
+ dev_dbg(&s->client->dev, "%s:\n", __func__);
+
+ s->active = false;
+
+ return 0;
+}
+
+static int si2168_get_tune_settings(struct dvb_frontend *fe,
+ struct dvb_frontend_tune_settings *s)
+{
+ s->min_delay_ms = 900;
+
+ return 0;
+}
+
+/*
+ * I2C gate logic
+ * We must use unlocked i2c_transfer() here because I2C lock is already taken
+ * by tuner driver.
+ */
+static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan)
+{
+ struct si2168 *s = mux_priv;
+ int ret;
+ struct i2c_msg gate_open_msg = {
+ .addr = s->client->addr,
+ .flags = 0,
+ .len = 3,
+ .buf = "\xc0\x0d\x01",
+ };
+
+ mutex_lock(&s->i2c_mutex);
+
+ /* open tuner I2C gate */
+ ret = __i2c_transfer(s->client->adapter, &gate_open_msg, 1);
+ if (ret != 1) {
+ dev_warn(&s->client->dev, "%s: i2c write failed=%d\n",
+ KBUILD_MODNAME, ret);
+ if (ret >= 0)
+ ret = -EREMOTEIO;
+ } else {
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan)
+{
+ struct si2168 *s = mux_priv;
+ int ret;
+ struct i2c_msg gate_close_msg = {
+ .addr = s->client->addr,
+ .flags = 0,
+ .len = 3,
+ .buf = "\xc0\x0d\x00",
+ };
+
+ /* close tuner I2C gate */
+ ret = __i2c_transfer(s->client->adapter, &gate_close_msg, 1);
+ if (ret != 1) {
+ dev_warn(&s->client->dev, "%s: i2c write failed=%d\n",
+ KBUILD_MODNAME, ret);
+ if (ret >= 0)
+ ret = -EREMOTEIO;
+ } else {
+ ret = 0;
+ }
+
+ mutex_unlock(&s->i2c_mutex);
+
+ return ret;
+}
+
+static const struct dvb_frontend_ops si2168_ops = {
+ .delsys = {SYS_DVBT},
+ .info = {
+ .name = "Silicon Labs Si2168",
+ .caps = FE_CAN_FEC_1_2 |
+ FE_CAN_FEC_2_3 |
+ FE_CAN_FEC_3_4 |
+ FE_CAN_FEC_5_6 |
+ FE_CAN_FEC_7_8 |
+ FE_CAN_FEC_AUTO |
+ FE_CAN_QPSK |
+ FE_CAN_QAM_16 |
+ FE_CAN_QAM_32 |
+ FE_CAN_QAM_64 |
+ FE_CAN_QAM_128 |
+ FE_CAN_QAM_256 |
+ FE_CAN_QAM_AUTO |
+ FE_CAN_TRANSMISSION_MODE_AUTO |
+ FE_CAN_GUARD_INTERVAL_AUTO |
+ FE_CAN_HIERARCHY_AUTO |
+ FE_CAN_MUTE_TS |
+ FE_CAN_2G_MODULATION
+ },
+
+ .get_tune_settings = si2168_get_tune_settings,
+
+ .init = si2168_init,
+ .sleep = si2168_sleep,
+
+ .set_frontend = si2168_set_frontend,
+
+ .read_status = si2168_read_status,
+};
+
+static int si2168_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct si2168_config *config = client->dev.platform_data;
+ struct si2168 *s;
+ int ret;
+ struct si2168_cmd cmd;
+
+ dev_dbg(&client->dev, "%s:\n", __func__);
+
+ s = kzalloc(sizeof(struct si2168), GFP_KERNEL);
+ if (!s) {
+ ret = -ENOMEM;
+ dev_err(&client->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
+ goto err;
+ }
+
+ s->client = client;
+ mutex_init(&s->i2c_mutex);
+
+ /* check if the demod is there */
+ cmd.wlen = 0;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ /* create mux i2c adapter for tuner */
+ s->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, s,
+ 0, 0, 0, si2168_select, si2168_deselect);
+ if (s->adapter == NULL)
+ goto err;
+
+ /* create dvb_frontend */
+ memcpy(&s->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
+ s->fe.demodulator_priv = s;
+
+ *config->i2c_adapter = s->adapter;
+ *config->fe = &s->fe;
+
+ i2c_set_clientdata(client, s);
+
+ dev_info(&s->client->dev,
+ "%s: Silicon Labs Si2168 successfully attached\n",
+ KBUILD_MODNAME);
+ return 0;
+err:
+ kfree(s);
+ dev_dbg(&client->dev, "%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static int si2168_remove(struct i2c_client *client)
+{
+ struct si2168 *s = i2c_get_clientdata(client);
+
+ dev_dbg(&client->dev, "%s:\n", __func__);
+
+ i2c_del_mux_adapter(s->adapter);
+
+ s->fe.ops.release = NULL;
+ s->fe.demodulator_priv = NULL;
+
+ kfree(s);
+
+ return 0;
+}
+
+static const struct i2c_device_id si2168_id[] = {
+ {"si2168", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, si2168_id);
+
+static struct i2c_driver si2168_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "si2168",
+ },
+ .probe = si2168_probe,
+ .remove = si2168_remove,
+ .id_table = si2168_id,
+};
+
+module_i2c_driver(si2168_driver);
+
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(SI2168_FIRMWARE);
projects / platform / kernel / linux-starfive.git / commitdiff